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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 972081Generated: October 30, 2026

Formaldehyde → 3-(Hydroxymethyl)phenytoin

https://huagongshe.com/reaction/972081

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
Reactant5,5-DiphenylhydantoinHCID 1775—
ReactantPotassium CarbonateHCID 11430—
SolventWaterHCID 962—
Product3-(Hydroxymethyl)phenytoinHCID 161366—

Reaction Steps

20 g of 5,5-diphenylhydantoin (0.08 moles) and 80 ml (32 g) of formalin are introduced into a suitable reaction vessel containing 720 ml of water and one g of potassium carbonate. The reaction is stirred at room temperature for 24 hours, after which the subject compound, mp 186.5°-188.5° C., yield 22.58 g (91.86%) is obtained by filtration.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04163058
Source datasetuspto-grants-1979_07
ORD IDord-cf2d76f527284f3cbacb2000501b9e3a
Source noteuspto-grants-1979_07